https://business.forums.bt.com/t5/Phone-system/Selling-our-old-BT-Polycom-VVX601-phones/m-p/96421#M2899 <P>Hi, we have some phones that are no longer used, they are BT Polycom VVX601 - I would like to know if these need to be unlocked before selling and if they will work for the new owner.&nbsp; Apparently BT lock the firmware to only sync with BT servers - is this correct?</P> Mon, 20 Apr 2026 11:29:31 GMT SRCFinancial 2026-04-20T11:29:31Z https://business.forums.bt.com/t5/Phone-system/Selling-our-old-BT-Polycom-VVX601-phones/m-p/96421#M2899 <P>Hi, we have some phones that are no longer used, they are BT Polycom VVX601 - I would like to know if these need to be unlocked before selling and if they will work for the new owner.&nbsp; Apparently BT lock the firmware to only sync with BT servers - is this correct?</P> Mon, 20 Apr 2026 11:29:31 GMT https://business.forums.bt.com/t5/Phone-system/Selling-our-old-BT-Polycom-VVX601-phones/m-p/96421#M2899 SRCFinancial 2026-04-20T11:29:31Z